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(No Model.) 2 Sheets-Sheet 2.

J. GRAVES. SUGAR WAGON.

No. 533,192. Patented Jan. 29, 18915.

IHIIH JOHN GRAVES, OF BROOKLYN, NEW YORK, ASSIGNOR TO KATHARINE AGNESGRAVES, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 533,192, dated January29, 1 895. Application led September 27,1894. Serial No. 524.303. (Nomodel.)

To all wwm it may concern,.-

Beit known that I, JOHN GRAVES, a citizen of the United States, and aresident of Brooklyn, in the county of Kings, State of New York, haveinvented a certain new and useful Improvement in Sugar-Wagons, of whichthe following is a speciicatio My invention relates to improvements insugar wagons, especially such as are made of sheet metal; and it is thepurpose of the invention, rst, to provide a newv lock for joining theedges of the several plates of which the sides and bottom of the wagonare composed, and which lock combines great strength with simplicity andease of manufact ure; second, to stiden the sides and ends of the wagon,by an appropriate corrugation or series of flanges at the top edge;third, to provide appropriate miter-pieces for closing the uppercorners; and, fourth, to shape the bottom of the wagon so as to stiftenthe same, and permit of the sugar deposit being removed by compressedair without bulging the bottom.

Referring to the drawings which accompany the specilication to aid thedescription, the same letters and figures indicating like parts on allthe views, Figure lis a vertical cross section of my sugar wagon, on theline X X of Fig. 3. Fig. 2 is a longitudinal section of the same. Fig. 3is a plan View of the wagon from above. Fig. 4 is a horizontal section.Fig. 5 is a detail of a miter-piece for the corners. Fig. 6 is avertical cross section of a wagon showing a slight modification in theupper flanges.

The body of the wagon is composed of plates of sheet metal, preferablysteel, ot, ct being the ends, b, b the sides, and c the bottom. Now bymeans well known in the art of sheet metal working, as bending-machines,or dies, the lower edges of the plates a, a', b, b are each bent intothe shape of hooks 1,2, 3, 4, respectively, (Figs. 1 and 2.) By similarmeans the four edges of the bottom c are bent first up then down and in,to form the interlocking hooks, 5, 6, 7, 8, of which hooks 5, 6,respect- .ively interlock with the end hooks l, 2, and

hooks 7, 8, respectively interlock with the side hooks 3, 4. Similarlythe vertical edges of the ends a, d are provided with the hooks 9, 9,10, l0, and the vertical edges of the sides b, b',

with interlocking hooks 11, ll, 12, l2 respectively. The top edges ofthe pieces a, a', b, b are each provided (by bending or stamping) -withthe double flanges or corrugat-ion f, f', g, g', for the purpose ofstiffening the said sides and ends of the wagon. The bottom c is dishedby dies, so as to have the depressed inner portion h, provided with theblow hole j. The eect of thus dishing the bottom c is to very greatlystiften the same, and to resist the bulging of the bottom and consequentdistortion of the shape of the body, when compressed airis blown, in theusual manner, into the wagon toremove the crust of sugar which collectstherein.v The ends a, a', sides b, h', and bottom c having been providedwith hooks,

Vandilanged and dished as described, the

hooks 11, ll, l2, 12, of the sides b, b areinterlocked respectively withthe hooks 9, 9, lO, l0 of the ends a, a and closed up by pressure,thereby locking the sides and ends together most firmly. Next the hooks5, 6, 7, S of the bottom c are interlocked with the corresponding hooksl, 2, 3, 4, of the ends a, a and sides b, b', and closed by pressure,thereby firmly uniting the bottom c to the said sides and ends.Evidently the upper corners, at the llangesf, g will be open, and toclose the same,I have devised the miter-pieces m, (Fig. 5,) which areprovided with the flanges' n, 0, to tit respectively against the [langesf, g, and with the flanges p, q to fit respectively against the flangesf, g. Said miter-pieces m may be adapted to fit either the outside orthe inside of the wagon, and I prefer to place them inside, as.indicated in Fig. 5.

Vheels to, w, will be placed on the wagon body at suitable positions.

In Fig. 6 is shown a slight modilication of the upper flanges. In thiscase the upper edges of both sides and ends are formed with the threebent portions 133,15, as shown. The construction of the wagon otherwiseis as hereinbefore described.

Now having described my improvement, I claim as my invention- A sugarwagon body formed of sheet metal plates which are connected at the edgesby the mutually interlocking hooks l and 5, 2 and 6, 3 and 7, 4 and 8,9and 11,9 and 12,10 and 11,

10 and l2, and said plates having the double myinventionl have signed myname, in presflanges ff g g around the top edge, mitel` ence of twoWitnesses, this 5th day of Febto pieces fitted and secured in thecorners of said ruary, 1894. double flanges so as to close theopeningthere- 5 in, and the bottom plate being (lished and pro- JOHNGRAVES' vided with a discharge outlet, substantially Vitnesses: asdescribed. BERNARD J. BECKE,

In testimony that I claim the foregoing as DAVID W. BROWN.

